From: Daniel Walker <dwalker@mvista.com>
To: Gregory Haskins <ghaskins@novell.com>
Cc: Ingo Molnar <mingo@elte.hu>,
linux-rt-users@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: Hang on 8-way with 2.6.23-rc2-rt2
Date: Tue, 07 Aug 2007 10:03:37 -0700 [thread overview]
Message-ID: <1186506217.22044.38.camel@imap.mvista.com> (raw)
In-Reply-To: <1186427253.21381.135.camel@ghaskins-t60p.haskins.net>
On Mon, 2007-08-06 at 15:07 -0400, Gregory Haskins wrote:
> Hi Ingo,
> I think there is a latent race condition somewhere in the code. We
> find that -rt works on our 4-way (and under) systems, but have problems
> on our 8-ways.
>
> If you run without nmi_watchdog, the system will sometimes boot (but
> very very very slow), and sometimes it will softlockup. If you turn on
> nmi_watchdog, the system detects a hang (probably at the point where the
> system gets really slow without it). We notice no problems on the
> 4-ways.
>
> The system where we can reproduce this is a Dell 690 with Dual 2Ghz
> Quad-core Xeon 5335s. I've attached some relevant info. Let me know if
> you need more.
Could you drop the following config options and test again?
#
# Processor type and features
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
(btw, added LKML to the CC list ..)
Daniel
next parent reply other threads:[~2007-08-07 17:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1186427253.21381.135.camel@ghaskins-t60p.haskins.net>
2007-08-07 17:03 ` Daniel Walker [this message]
2007-08-07 17:27 ` Gregory Haskins
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1186506217.22044.38.camel@imap.mvista.com \
--to=dwalker@mvista.com \
--cc=ghaskins@novell.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rt-users@vger.kernel.org \
--cc=mingo@elte.hu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®